I don't think mine is that disappointing. I tossed the stock battery in the bag and got the biggest I could find on amazon from Sedio and I get over a week on a charge. But then I'm not on it all day long either.
I think it's still quite dumb. That is, after 2 years, the OS and apps still have the same issues.
Five important rules about new smartphone are:
1. Battery life will disappoint
2. Tap the screen, don't stab it
3. The difference between off and standby
4. Avoid overpriced cases
5. Apps bring the 'smart'
Thanks And Regards.